Pipe-vise.



C. W. SIEVERT.

PIPE VISB.

APPLICATION FILED JAN. 10, 1908.

Patented Nov. 17, 1908.

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CHARLES W. SIEVERT, OF LOS ANGELES, CALIFORNIA.

PIPE-VISE Specification of Letters Patent.

Application filed January 10, 1908.

Patented Nov. 17', 1908.

Serial No. 410,279.

To all whom it may concern:

Be 1t known that I, CHARLES lV. SIEVERT, a. citizen of the United States, residing at jaw by the pintle bolt 23 which passes through the head of said bolt and the adj acent portions of said jaw. ()n bolt 22 is an Los Angeles, county of Los Angeles, State of adjusting nut 21 which may be screwed California, have invented new and useful Improvements in Pipe-Vises, of which the following is a specification.

My invention relates to a vise for holding pipe when cutting or threading the same. and the object thereof is to provide a quick acting device which can be adjusted to [it a desired size of pipe in which the pipe can be clamped by a single movement and can be released from the device by a single movement without affecting the adjustment.

My invention is illustrated in the accompanying drawings in which;

Figure 1 is a side elevation partly broken away of my improved vise. Fig. 2 is a plan of the same. Fig. 3 is an end elevation.

In the drawings 5 is the base plate which rests upon the bench 6 and is fastened thereto in any suitable manner, screws 7 being shown as the means in the drawing. To the base plate are secured the side plates 8 and 9 which are preferably cast integral with the base plate. Plate 8 may project below the base plate and be secured by screws 10 to the bench. At the ends the side plates are higher than in the central portions, and form end lugs, those at the front being marked 11 and those at the rear end being marked 12. Lugs 11 are united by a cross bar 13 and lugs 12 are united by cross bar 14. To the under side of cross bar 13 is secured spring 15 which bears upon the lower side of the double faced toothed jaw 16, which is revolubly mounted in lugs 11. This spring could be omitted but its use holds the jaw in proper position. This aw is provided with trunnions 17 which are preferably drop forged integral with the jaw and are passed through slots 18 in lugs 11 shown in dotted lines in Fig. 1. If desired, however, the trunnions could consist of a pintle bolt passed through lugs 11 and through the jaw, holes being provided therethrough for that purpose.

19 is a movable jaw provided with a V-shaped face opposed to the toothed jaw. The movable jaw is provided with a base bar 20, which for lightness of construction is I-shaped as best shown in Fig. 3. The upper portion of the rear part of the movable jaw is provided with a recess 21 in which is re ceived the head of the screw threaded adj usting bolt 22, which is secured to the movable I l l l l l l l l l toward or away from the jaw so as to adjust the vise for use on pipes of dill'ercnt sizes.

is an operating handle, which may consist of a piece of pipe of suitable bore to slip upon the end of bolt If desired bolt 22 could be made long enough and the outer end smooth and the handle dispensed with. I prefer the handle as it can be removed thus enabling it to be more closely packed.

26 is a piece of pipe shown in place in the vise for the purpose of illustration.

In the operation of my improved vise nut 21- would be adjusted upon bolt 22 so that when the parts were brought to the position shown in Fig. 1 the pipe to be operated upon would be engaged by the jaws as shown in Fig. 1. A stock and die would then be used for threading the end of the pipe in the usual manner. It will be observed that the central portion of the toothed jaw is engaged by the pipe, and as force would be applied upon the stock and die to cut. the thread the twist would be either to the right or left, depending upon whether the thread was a right or a left thread. ency of the pipe would be to twist out between the jaws upwardly, and in the other case to twist out between the jaws downwardly. In either case owing to the fact that the face of the movable jaw is smooth and V-shaped, and the toothed jaw is pivoted at its center the toothed jaw would rock and thereby more firmly engage the pipe, and the greater the force put upon the pipe the more firmly the teeth of the toothed jaw would engage the pipe to keep it from turning. As soon as the thread has been cut and the stock and die removed from the end of the pipe by turning the handle and bolt 22 to the position shown in dotted lines in Fig. 1 the movable aw can be moved rearwardly a sufficient. distance so that the pipe can be readily re moved and another pipe inserted between the jaws, when the sliding jaw by a single movement is moved up into contact with the pipe and carries it into engagement with the toothed jaw, and the handle is then brought down so that nut 2s engages lugs 12 when the pipe is securely held between the jaws of the vise ready to be operated upon.

It will thus be seen that by this construc- In one case the tendtion a quickly operating pipe vise is provided which can be used upon successive pieces of pipe of the same size without the usual loss of time occasioned by screwing up and then unscrewing the aws of the ordinary pipe vise to hold and release the pipe.

By making the toothed jaw double faced when the teeth become dulled on one side the jaw may be turned end for end or turned over thereby bringing the other face in position for use, thus prolonging the life of usefulness of the tool without additional cost, and when the toothed jaw becomes worn out it can be readily replaced with a new one at small cost. If desired the jaw with the Vshaped face could be stationary and the other jaw movable. It will be observed that the base bar of the movable jaw passes beneath the cross bars, and that the cross bars hold the movable jaw from tipping when force is applied to thread or cut a pipe in the vise.

Having described my invention what I claim is:

1. A pipe vise comprising a frame having upwardly projecting lugs ateach end thereof; a toothed jaw centrally and pivot ally mounted in the lugs at one end of said frame; a movable jaw having a transverse V-shaped face opposed to said toothed jaw slidably mounted in said frame; and adjustable means to cause said jaws to grip and hold the pipe.

2. A pipe vise comprising a frame having upwardly projecting lugs at each end thereof; a toothed jaw centrally and pivotally mounted in the lugs at one end of said frame; a movable jaw having a transverse V-shaped face opposed to said toothed jaw slidably mounted in said frame, an adjusting screw pivot-ally secured to said movable jaw; and an adjusting nut upon said adjusting screw.

3. A pipe vise comprising a frame; a toothed jaw pivotally mounted at its center in one end of said frame; a sliding movable toward and from the toothed jaw in the other end of the frame; a threaded bolt pivotally connected to the sliding aw; a nut on said bolt; and abutment lugs on said frame at the rear of said nut when the sliding aw is brought into operative position to grip and hold a pipe, said lugs being e11- gaged by said nut.

In witness that I claim the foregoing I have hereunto subscribed my name this 3rd day of January 1908.

G. W. SIEVERT.

lVitnesses Gno. E. HARPHAM, S. B. AUs'rIN. 

